Then the questions got a little more anatomical, with one user asking "Does it [sex] feel different?" to which twicethefunn answered:

"Yes, but then again all vaginas are different."

One thing he did point out was other people's confusion over the female anatomy, helpfully clarifying:

"Urine comes out of the urethra, not the vaginal canal. The urethra is near the top of the vagina while the vaginal canal is at the bottom."

Other users asked twicethefunn for details about his own private parts (no, he doesn't have two penises) and with some lines of questioning getting a bit abstract.

As for conceiving and carrying a child, he revealed while his girlfriend could get pregnant via both vaginas, "she knows way more about this than me. Don't ask me how that works though."

Aside from most of Reddit, twicethefunn has also told his close friends about his girlfriend's uterine didelphys.

It seems the decision to go public with their sex life was one both parties in the couple felt comfortable with.

"I've been browsing Reddit for over a year, so I pretty much have caught on to how it functions. I expected a lot of sex questions, a lot of medical questions and a lot of humor," adding in response to another comment: